ID: 250

AQSQID: 080013001

Site Name: Welby - 78th Ave. & Steele St.

Added: April 21, 2020, 6:24 p.m.

Updated: June 22, 2021, 1:56 p.m.

Location: Denver (Steele St), CO

Reporting: True, Located: True

Current AQI: 71.0

Denver (Steele St) CO, US: 39.8392, -104.9489

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 22, 2021, noon N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) 3.0 ppb (3) 0.44 ppb (5) 95.0 μg/m3 (71) N/A 71.0
 
June 22, 2021, 11 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 6.0 ppb (6) 0.25 ppb (3) 43.0 μg/m3 (40) N/A 40.0
 
June 22, 2021, 10 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 11.0 ppb (11) 0.17 ppb (3) 73.0 μg/m3 (60) N/A 60.0
 
June 22, 2021, 9 a.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 13.0 ppb (13) 0.2 ppb (3) 80.0 μg/m3 (64) N/A 64.0
 
June 22, 2021, 8 a.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 15.0 ppb (14) 0.2 ppb (3) 80.0 μg/m3 (64) N/A 64.0
 
June 22, 2021, 7 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 16.0 ppb (15) 0.2 ppb (3) 54.0 μg/m3 (50) N/A 50.0
 
June 22, 2021, 6 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) 78.0 μg/m3 (63) N/A 63.0
 
June 22, 2021, 5 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) 69.0 μg/m3 (58) N/A 58.0
 
June 22, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 50.0 μg/m3 (47) N/A 47.0
 
June 22, 2021, 3 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 37.0 ppb (35) 0.18 ppb (3) 48.0 μg/m3 (45) N/A 45.0
 
June 22, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 40.0 ppb (38) 0.17 ppb (3) 11.0 μg/m3 (11) N/A 38.0
 
June 22, 2021, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 51.0 ppb (48) 0.15 ppb (2) 5.0 μg/m3 (5) N/A 48.0
 
June 22, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 56.0 ppb (55) 0.15 ppb (2) N/A N/A 55.0
 
June 21, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 56.0 ppb (55) 0.15 ppb (2) N/A N/A 55.0
 
June 21, 2021, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 55.0 ppb (51) 0.15 ppb (2) N/A N/A 51.0
 
June 21, 2021, 9 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 52.0 ppb (49) 0.15 ppb (2) N/A N/A 49.0
 
June 21, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.16 ppb (3) N/A N/A 46.0
 
June 21, 2021, 7 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 48.0 ppb (45) 0.17 ppb (3) 33.0 μg/m3 (31) N/A 45.0
 
June 21, 2021, 6 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 43.0 ppb (40) 0.16 ppb (3) 34.0 μg/m3 (32) N/A 40.0
 
June 21, 2021, 5 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) 24.0 μg/m3 (23) N/A 39.0
 
June 21, 2021, 4 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 38.0 ppb (36) 0.15 ppb (2) 21.0 μg/m3 (20) N/A 36.0
 
June 21, 2021, 3 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A 34.0 ppb (32) 0.19 ppb (3) 23.0 μg/m3 (22) N/A 32.0
 
June 21, 2021, 2 p.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 30.0 μg/m3 (28) N/A 28.0
 
June 21, 2021, 1 p.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 24.0 ppb (23) 0.2 ppb (3) 33.0 μg/m3 (31) N/A 31.0
 
June 21, 2021, noon N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 23.0 ppb (22) 0.23 ppb (3) 16.0 μg/m3 (15) N/A 22.0
 
June 21, 2021, 11 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 12.0 μg/m3 (12) N/A 26.0
 
June 21, 2021, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.13 ppb (2) 2.0 μg/m3 (2) N/A 30.0
 
June 21, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) 0.12 ppb (2) 9.0 μg/m3 (9) N/A 31.0
 
June 21, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) 8.0 μg/m3 (8) N/A 33.0
 
June 21, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) 8.0 μg/m3 (8) N/A 31.0
 
June 21, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.12 ppb (2) 40.0 μg/m3 (38) N/A 38.0
 
June 21, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) 0.13 ppb (2) 39.0 μg/m3 (37) N/A 37.0
 
June 21, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.13 ppb (2) 66.0 μg/m3 (57) N/A 57.0
 
June 21, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) 43.0 μg/m3 (40) N/A 40.0
 
June 21, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) 0.13 ppb (2) 57.0 μg/m3 (52) N/A 52.0
 
June 21, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (50) 0.12 ppb (2) 71.0 μg/m3 (59) N/A 59.0
 
June 21, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) 0.12 ppb (2) 40.0 μg/m3 (38) N/A 49.0
 
June 20, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (55) 0.12 ppb (2) 55.0 μg/m3 (51) N/A 55.0
 
June 20, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 57.0 ppb (58) 0.12 ppb (2) 49.0 μg/m3 (46) N/A 58.0
 
June 20, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 59.0 ppb (65) 0.13 ppb (2) 44.0 μg/m3 (41) N/A 65.0
 
June 20, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (55) 0.13 ppb (2) 60.0 μg/m3 (54) N/A 55.0
 
June 20, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (55) 0.14 ppb (2) 55.0 μg/m3 (51) N/A 55.0
 
June 20, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 55.0 ppb (51) 0.13 ppb (2) 52.0 μg/m3 (49) N/A 51.0
 
June 20, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) 0.12 ppb (2) 53.0 μg/m3 (50) N/A 50.0
 
June 20, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) 0.1 ppb (2) 67.0 μg/m3 (57) N/A 57.0
 
June 20, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (43) 0.13 ppb (2) 36.0 μg/m3 (34) N/A 43.0
 
June 20, 2021, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) N/A N/A 38.0
 
June 20, 2021, 1 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) N/A N/A 25.0
 
June 20, 2021, noon N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 14.0 ppb (13) 0.25 ppb (3) 103.0 μg/m3 (75) N/A 75.0
 
June 20, 2021, 11 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 10.0 ppb (10) 0.27 ppb (4) N/A N/A 20.0
 
June 20, 2021, 10 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 12.0 ppb (12) 0.28 ppb (4) 32.0 μg/m3 (30) N/A 30.0
 
June 20, 2021, 9 a.m. N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 20.0 ppb (19) 0.28 ppb (4) 24.0 μg/m3 (23) N/A 23.0
 
June 20, 2021, 8 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 11.0 ppb (11) 0.35 ppb (4) N/A N/A 22.0
 
June 20, 2021, 7 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 21.0 ppb (20) 0.32 ppb (4) 41.0 μg/m3 (38) N/A 38.0
 
June 20, 2021, 6 a.m. N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 28.0 ppb (26) 0.28 ppb (4) 24.0 μg/m3 (23) N/A 26.0
 
June 20, 2021, 5 a.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 35.0 ppb (33) 0.28 ppb (4) 29.0 μg/m3 (27) N/A 33.0
 
June 20, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.26 ppb (4) 34.0 μg/m3 (32) N/A 40.0
 
June 20, 2021, 3 a.m. N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) 45.0 ppb (42) 0.24 ppb (3) 84.0 μg/m3 (66) N/A 66.0
 
June 20, 2021, 2 a.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 38.0 ppb (36) 0.26 ppb (4) N/A N/A 36.0
 
June 20, 2021, 1 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 41.0 ppb (38) 0.21 ppb (3) N/A N/A 38.0
 
June 20, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (46) 0.19 ppb (3) N/A N/A 46.0
 
June 19, 2021, 11 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 49.0 ppb (46) 0.21 ppb (3) N/A N/A 46.0
 
June 19, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 57.0 ppb (58) 0.18 ppb (3) N/A N/A 58.0
 
June 19, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 60.0 ppb (68) 0.18 ppb (3) N/A N/A 68.0
 
June 19, 2021, 8 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 57.0 ppb (58) 0.24 ppb (3) N/A N/A 58.0
 
June 19, 2021, 7 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 74.0 ppb (103) 0.23 ppb (3) 70.0 μg/m3 (59) N/A 103.0
 
June 19, 2021, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 74.0 ppb (103) 0.23 ppb (3) N/A N/A 103.0
 
June 19, 2021, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 63.0 ppb (78) 0.22 ppb (3) N/A N/A 78.0
 
June 19, 2021, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 56.0 ppb (55) 0.22 ppb (3) 55.0 μg/m3 (51) N/A 55.0
 
June 19, 2021, 3 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 48.0 ppb (45) 0.21 ppb (3) 106.0 μg/m3 (77) N/A 77.0
 
June 19, 2021, 2 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 42.0 ppb (39) 0.21 ppb (3) 102.0 μg/m3 (75) N/A 75.0
 
June 19, 2021, 1 p.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) 83.0 μg/m3 (65) N/A 65.0
 
June 19, 2021, noon N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 16.0 ppb (15) 0.32 ppb (4) 66.0 μg/m3 (57) N/A 57.0
 
June 19, 2021, 11 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 11.0 ppb (11) 0.3 ppb (4) 67.0 μg/m3 (57) N/A 57.0
 
June 19, 2021, 10 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 22.0 ppb (21) 0.23 ppb (3) 16.0 μg/m3 (15) N/A 21.0
 
June 19, 2021, 9 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) 93.0 μg/m3 (70) N/A 70.0
 
June 19, 2021, 8 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 34.0 ppb (32) 0.24 ppb (3) 106.0 μg/m3 (77) N/A 77.0
 
June 19, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (43) 0.2 ppb (3) 29.0 μg/m3 (27) N/A 43.0
 
June 19, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (46) 0.18 ppb (3) 23.0 μg/m3 (22) N/A 46.0
 
June 19, 2021, 5 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 36.0 ppb (34) 0.29 ppb (4) 138.0 μg/m3 (93) N/A 93.0
 
June 19, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.22 ppb (3) N/A N/A 39.0
 
June 19, 2021, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 44.0 ppb (41) 0.19 ppb (3) 33.0 μg/m3 (31) N/A 41.0
 
June 19, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 45.0 ppb (42) 0.21 ppb (3) 19.0 μg/m3 (18) N/A 42.0
 
June 19, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 50.0 ppb (47) 0.2 ppb (3) 31.0 μg/m3 (29) N/A 47.0
 
June 19, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 53.0 ppb (50) 0.18 ppb (3) 45.0 μg/m3 (42) N/A 50.0
 
June 18, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 63.0 ppb (78) 0.18 ppb (3) N/A N/A 78.0
 
June 18, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 67.0 ppb (91) 0.16 ppb (3) N/A N/A 91.0
 
June 18, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 67.0 ppb (91) 0.17 ppb (3) N/A N/A 91.0
 
June 18, 2021, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 68.0 ppb (94) 0.17 ppb (3) 62.0 μg/m3 (55) N/A 94.0
 
June 18, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 67.0 ppb (91) 0.17 ppb (3) 83.0 μg/m3 (65) N/A 91.0
 
June 18, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 63.0 ppb (78) 0.16 ppb (3) 125.0 μg/m3 (86) N/A 86.0
 
June 18, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 59.0 ppb (65) 0.17 ppb (3) 150.0 μg/m3 (99) N/A 99.0
 
June 18, 2021, 4 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 48.0 ppb (45) 0.15 ppb (2) 54.0 μg/m3 (50) N/A 50.0
 
June 18, 2021, 3 p.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 38.0 ppb (36) 0.21 ppb (3) N/A N/A 36.0
 
June 18, 2021, 2 p.m. N/A N/A N/A 39.0 ppb (37) N/A 1.0 ppb (2) 13.0 ppb (13) 0.52 ppb (6) 113.0 μg/m3 (80) N/A 80.0
 
June 18, 2021, 1 p.m. N/A N/A N/A 38.0 ppb (36) N/A 1.0 ppb (2) 5.0 ppb (5) 0.62 ppb (7) 129.0 μg/m3 (88) N/A 88.0
 
June 18, 2021, noon N/A N/A N/A 36.0 ppb (34) N/A 1.0 ppb (2) 2.0 ppb (2) 0.77 ppb (10) 129.0 μg/m3 (88) N/A 88.0
 
June 18, 2021, 11 a.m. N/A N/A N/A 30.0 ppb (29) N/A 0.0 ppb (0) 3.0 ppb (3) 0.42 ppb (5) 81.0 μg/m3 (64) N/A 64.0
 
June 18, 2021, 10 a.m. N/A N/A N/A 24.0 ppb (23) N/A 0.0 ppb (0) 7.0 ppb (7) 0.32 ppb (4) 62.0 μg/m3 (55) N/A 55.0
 
June 18, 2021, 9 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 13.0 ppb (13) 0.27 ppb (4) 40.0 μg/m3 (38) N/A 38.0
 
June 18, 2021, 8 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 18.0 ppb (17) 0.23 ppb (3) 156.0 μg/m3 (102) N/A 102.0
 
June 18, 2021, 7 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 32.0 ppb (30) 0.22 ppb (3) 70.0 μg/m3 (59) N/A 59.0
 
June 18, 2021, 6 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 28.0 ppb (26) 0.27 ppb (4) 34.0 μg/m3 (32) N/A 32.0
 
June 18, 2021, 5 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 28.0 ppb (26) 0.27 ppb (4) 67.0 μg/m3 (57) N/A 57.0
 
June 18, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.22 ppb (3) 37.0 μg/m3 (35) N/A 35.0
 
June 18, 2021, 3 a.m. N/A N/A N/A 10.0 ppb (10) N/A 2.0 ppb (3) 44.0 ppb (41) 0.22 ppb (3) 27.0 μg/m3 (25) N/A 41.0
 
June 18, 2021, 2 a.m. N/A N/A N/A 15.0 ppb (15) N/A 1.0 ppb (2) 39.0 ppb (37) 0.27 ppb (4) 78.0 μg/m3 (63) N/A 63.0
 
June 18, 2021, 1 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 47.0 ppb (44) 0.24 ppb (3) 128.0 μg/m3 (88) N/A 88.0
 
June 18, 2021, midnight N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 55.0 ppb (51) 0.19 ppb (3) 88.0 μg/m3 (68) N/A 68.0
 
June 17, 2021, 11 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 58.0 ppb (61) 0.17 ppb (3) 163.0 μg/m3 (105) N/A 105.0
 
June 17, 2021, 10 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 64.0 ppb (81) 0.17 ppb (3) 130.0 μg/m3 (89) N/A 89.0
 
June 17, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 74.0 ppb (103) 0.14 ppb (2) N/A N/A 103.0
 
June 17, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 73.0 ppb (103) 0.14 ppb (2) 113.0 μg/m3 (80) N/A 103.0
 
June 17, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 70.0 ppb (100) 0.14 ppb (2) N/A N/A 100.0
 
June 17, 2021, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 69.0 ppb (97) 0.14 ppb (2) N/A N/A 97.0
 
June 17, 2021, 5 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 65.0 ppb (84) 0.17 ppb (3) N/A N/A 84.0
 
June 17, 2021, 4 p.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 49.0 ppb (46) 0.32 ppb (4) 61.0 μg/m3 (54) N/A 54.0
 
June 17, 2021, 3 p.m. N/A N/A N/A 36.0 ppb (34) N/A 1.0 ppb (2) 31.0 ppb (29) 0.45 ppb (6) 170.0 μg/m3 (109) N/A 109.0
 
June 17, 2021, 2 p.m. N/A N/A N/A 41.0 ppb (39) N/A 0.0 ppb (0) 20.0 ppb (19) 0.45 ppb (6) 79.0 μg/m3 (63) N/A 63.0
 
June 17, 2021, 1 p.m. N/A N/A N/A 44.0 ppb (42) N/A 1.0 ppb (2) 9.0 ppb (9) 0.54 ppb (6) 149.0 μg/m3 (98) N/A 98.0
 
June 17, 2021, noon N/A N/A N/A 43.0 ppb (41) N/A 1.0 ppb (2) 5.0 ppb (5) 0.55 ppb (7) 120.0 μg/m3 (84) N/A 84.0
 
June 17, 2021, 11 a.m. N/A N/A N/A 26.0 ppb (25) N/A 0.0 ppb (0) 15.0 ppb (14) 0.32 ppb (4) 71.0 μg/m3 (59) N/A 59.0
 
June 17, 2021, 10 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 31.0 ppb (29) 0.19 ppb (3) 87.0 μg/m3 (67) N/A 67.0
 
June 17, 2021, 9 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 45.0 μg/m3 (42) N/A 42.0
 
June 17, 2021, 8 a.m. N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) 40.0 ppb (38) 0.15 ppb (2) 34.0 μg/m3 (32) N/A 38.0
 
June 17, 2021, 7 a.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) 53.0 μg/m3 (50) N/A 50.0
 
June 17, 2021, 6 a.m. N/A N/A N/A 22.0 ppb (21) N/A 1.0 ppb (2) 24.0 ppb (23) 0.25 ppb (3) 58.0 μg/m3 (53) N/A 53.0
 
June 17, 2021, 5 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 22.0 ppb (21) 0.35 ppb (4) 48.0 μg/m3 (45) N/A 45.0
 
June 17, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.42 ppb (5) 52.0 μg/m3 (49) N/A 49.0
 
June 17, 2021, 3 a.m. N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) 19.0 ppb (18) 0.42 ppb (5) 67.0 μg/m3 (57) N/A 57.0
 
June 17, 2021, 2 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 30.0 ppb (28) 0.37 ppb (5) 102.0 μg/m3 (75) N/A 75.0
 
June 17, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 46.0 ppb (43) 0.22 ppb (3) 64.0 μg/m3 (56) N/A 56.0
 
June 17, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 52.0 ppb (49) 0.17 ppb (3) 99.0 μg/m3 (73) N/A 73.0
 
June 16, 2021, 11 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 53.0 ppb (50) 0.18 ppb (3) 106.0 μg/m3 (77) N/A 77.0
 
June 16, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 61.0 ppb (71) 0.17 ppb (3) 98.0 μg/m3 (73) N/A 73.0
 
June 16, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 71.0 ppb (101) 0.18 ppb (3) 72.0 μg/m3 (60) N/A 101.0
 
June 16, 2021, 8 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 59.0 ppb (65) 0.18 ppb (3) N/A N/A 65.0
 
June 16, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 56.0 ppb (55) 0.17 ppb (3) N/A N/A 55.0
 
June 16, 2021, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 62.0 ppb (74) 0.19 ppb (3) 137.0 μg/m3 (92) N/A 92.0
 
June 16, 2021, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 61.0 ppb (71) 0.18 ppb (3) 124.0 μg/m3 (86) N/A 86.0
 
June 16, 2021, 4 p.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 55.0 ppb (51) 0.24 ppb (3) N/A N/A 51.0
 
June 16, 2021, 3 p.m. N/A N/A N/A 32.0 ppb (31) N/A 1.0 ppb (2) 32.0 ppb (30) 0.44 ppb (5) 118.0 μg/m3 (83) N/A 83.0
 
June 16, 2021, 2 p.m. N/A N/A N/A 42.0 ppb (40) N/A 1.0 ppb (2) 15.0 ppb (14) 0.63 ppb (7) 138.0 μg/m3 (93) N/A 93.0
 
June 16, 2021, 1 p.m. N/A N/A N/A 46.0 ppb (44) N/A 2.0 ppb (3) 4.0 ppb (4) 0.97 ppb (12) 207.0 μg/m3 (127) N/A 127.0
 
June 16, 2021, noon N/A N/A N/A 36.0 ppb (34) N/A 1.0 ppb (2) 3.0 ppb (3) 0.61 ppb (7) 142.0 μg/m3 (95) N/A 95.0
 
June 16, 2021, 11 a.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 2.0 ppb (2) 0.38 ppb (5) 68.0 μg/m3 (58) N/A 58.0
 
June 16, 2021, 10 a.m. N/A N/A N/A 29.0 ppb (28) N/A 0.0 ppb (0) 7.0 ppb (7) 0.26 ppb (4) 99.0 μg/m3 (73) N/A 73.0
 
June 16, 2021, 9 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 19.0 ppb (18) 0.25 ppb (3) 50.0 μg/m3 (47) N/A 47.0
 
June 16, 2021, 8 a.m. N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 25.0 ppb (24) 0.26 ppb (4) 52.0 μg/m3 (49) N/A 49.0
 
June 16, 2021, 7 a.m. N/A N/A N/A 27.0 ppb (26) N/A 0.0 ppb (0) 22.0 ppb (21) 0.37 ppb (5) 30.0 μg/m3 (28) N/A 28.0
 
June 16, 2021, 6 a.m. N/A N/A N/A 27.0 ppb (26) N/A 0.0 ppb (0) 27.0 ppb (25) 0.35 ppb (4) 48.0 μg/m3 (45) N/A 45.0
 
June 16, 2021, 5 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 28.0 ppb (26) 0.35 ppb (4) 39.0 μg/m3 (37) N/A 37.0
 
June 16, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) 0.29 ppb (4) 56.0 μg/m3 (52) N/A 52.0
 
June 16, 2021, 3 a.m. N/A N/A N/A 16.0 ppb (16) N/A 1.0 ppb (2) 40.0 ppb (38) 0.3 ppb (4) 64.0 μg/m3 (56) N/A 56.0
 
June 16, 2021, 2 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 53.0 ppb (50) 0.23 ppb (3) 96.0 μg/m3 (72) N/A 72.0
 
June 16, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 46.0 ppb (43) 0.18 ppb (3) 157.0 μg/m3 (102) N/A 102.0
 
June 16, 2021, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 55.0 ppb (51) 0.14 ppb (2) 146.0 μg/m3 (97) N/A 97.0
 
June 15, 2021, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 65.0 ppb (84) 0.14 ppb (2) N/A N/A 84.0
 
June 15, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 70.0 ppb (100) 0.15 ppb (2) N/A N/A 100.0
 
June 15, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 78.0 ppb (105) 0.16 ppb (3) N/A N/A 105.0
 
June 15, 2021, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 88.0 ppb (110) 0.17 ppb (3) N/A N/A 110.0
 
June 15, 2021, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 93.0 ppb (113) 0.18 ppb (3) N/A N/A 113.0
 
June 15, 2021, 6 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 88.0 ppb (110) 0.19 ppb (3) N/A N/A 110.0
 
June 15, 2021, 5 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 73.0 ppb (103) 0.19 ppb (3) 91.0 μg/m3 (69) N/A 103.0
 
June 15, 2021, 4 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 62.0 ppb (74) 0.19 ppb (3) N/A N/A 74.0
 
June 15, 2021, 3 p.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 42.0 ppb (39) 0.29 ppb (4) 123.0 μg/m3 (85) N/A 85.0
 
June 15, 2021, 2 p.m. N/A N/A N/A 38.0 ppb (36) N/A 2.0 ppb (3) 21.0 ppb (20) 0.5 ppb (6) 136.0 μg/m3 (92) N/A 92.0
 
June 15, 2021, 1 p.m. N/A N/A N/A 42.0 ppb (40) N/A 1.0 ppb (2) 9.0 ppb (9) 0.61 ppb (7) 196.0 μg/m3 (122) N/A 122.0